Equations, part 1
Equations, part 1 Equations, part 2 Equations, part 3

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What the symbols mean

The neutrino symbols (e.g. n) represent a type of neutrino; it may be a muon or a tau neutrino, or it may be some mixture of the two which is given a numerical label.

bulletm stands for mass (of the neutrino in this case)
bulletE stands for energy
bulletp stands for momentum
bulletx and L are the distance travelled by the neutrino
bullett is the time since the neutrino was produced
bulletsin and cos are the trigonometric functions sine and cosine

To keep these types of calculations as uncluttered, physicists avoid writing frequently occuring constants like, say, the speed of light ("c"). So for instance, Einstein's famous equation E = mc2 can also just be written E = m, if you measure E and m in appropriately chosen units.

The requirements

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Dave Casper